*SUPPORT*
IN: zup OUT: PINK
IN: lug blicket fep OUT: BLUE GREEN
IN: lug gazzer zup OUT: PINK BLUE
IN: dax tufa zup OUT: YELLOW PINK
IN: dax OUT: YELLOW
IN: fep blicket dax OUT: GREEN YELLOW
IN: dax tufa lug gazzer zup OUT: PINK YELLOW BLUE
IN: fep blicket fep OUT: GREEN GREEN
IN: fep blicket lug OUT: GREEN BLUE
IN: zup tufa dax OUT: PINK YELLOW
IN: zup zup tufa lug OUT: PINK PINK BLUE
IN: zup tufa fep gazzer fep gazzer dax OUT: YELLOW GREEN PINK GREEN
IN: dax blicket zup OUT: YELLOW PINK
IN: dax blicket lug OUT: YELLOW BLUE

*QUERY*
IN: zup tufa zup OUT: PINK PINK
IN: zup fep zup blicket dax gazzer zup OUT: PINK PINK GREEN PINK YELLOW
IN: fep OUT: GREEN
IN: lug blicket dax OUT: BLUE YELLOW
IN: fep lug tufa dax gazzer fep OUT: GREEN GREEN BLUE YELLOW
IN: fep tufa zup OUT: GREEN PINK
IN: lug OUT: BLUE
IN: fep tufa lug OUT: GREEN BLUE
IN: fep blicket dax gazzer dax OUT: YELLOW GREEN YELLOW
IN: zup blicket fep OUT: PINK GREEN

*GRAMMAR*
lug -> BLUE 
 dax -> YELLOW 
 zup -> PINK 
 fep -> GREEN 
 u1 tufa u2 -> [u1] [u2] 
 u1 blicket u2 -> [u1] [u2] 
 x1 gazzer u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 